Development of a trigger for acoustic neutrino candidates in KM3NeT ...

• Main Authors: Tortosa, Dídac D., Ardid, Miguel, Bou-Cabo, Manuel, Lara, Guillermo, Martínez-Mora, Juan A.
• Format: Text
• Language: unknown
• Published: arXiv 2022
• Subjects: Instrumentation and Methods for Astrophysics astro-ph.IM; Instrumentation and Detectors physics.ins-det; FOS Physical sciences; Orca
• Online Access: https://dx.doi.org/10.48550/arxiv.2211.10149; https://arxiv.org/abs/2211.10149

The KM3NeT Collaboration is constructing two large neutrino detectors in the Mediterranean Sea: ARCA, located near Sicily and aiming at neutrino astronomy, and ORCA located near Toulon and designed for the study of intrinsic neutrino properties. The two detectors together will have hundreds of Detection Units with Digital Optical Modules kept vertically by buoyancy forming a large 3D optical array for detecting the Cherenkov light produced after the neutrino interactions. To properly reconstruct the direction of the incoming neutrino, the position of the DOMs, which are not static due to the sea currents, must be monitored. For this purpose, the detector is equipped with an Acoustic Positioning System, which is composed of fixed acoustic emitters on the sea bottom, a hydrophone in each DU base, and a piezoceramic sensor in each DOM, as acoustic receivers. This network of acoustic sensors can be used not only for positioning, but also for acoustic monitoring studies such as bioacoustics, ship noise ... : 9th International Workshop on Acoustic and Radio EeV Neutrino Detection Activities - ARENA2022 ...